这篇文章主要为大家详细介绍了原生JS音乐播放器，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

本文实例为大家分享了JS实现音乐播放器的具体代码，供大家参考，具体内容如下

首先，使用HTML搭好我们的框架结构。这一步为了提高我们代码的可读性，多写注释。

         
歌曲名称
歌手
  100%     00:0000:00   

第二步，搭好框架后，就用CSS给他写上你喜欢的样式。注意这里我是将样式分为了公共样式和独立样式分开写的，提高代码可重复利用，当然你也可以使用SASS更方便，这里我只提供了独立样式，公共样式可以在网上自主寻找。

 html { background: #92b991; } .music { width: 670px; height: 400px; background: url("../images/bg.jpg-600") no-repeat center; margin-left: auto; margin-right: auto; border: 1px #3d5e59 solid; margin-top: 150px; border-radius: 20px; box-shadow: 0 0 20px rgba(0, 0, 0, 0.3); position: relative; } .img { width: 200px; height: 200px; border: 2px #fff solid; overflow: hidden; border-radius: 100%; margin-top: 50px; margin-left: 35%; } .mtv { width: 670px; position: relative; } .text { color: #fff; margin-right: 30px; margin-left: 30px; margin-bottom: 10px; } .text>h1 { font-size: 24px; line-height: 30px; font-weight: normal; } .text>h2 { font-family: "Microsoft YaHei"; font-size: 14px; font-weight: 300; line-height: 1.7; } .vol01 { position: absolute; height: 30px; width: 120px; right: 30px; top: -8%; } .volPro { width: 100%; height: 5px; margin-top: 44.5px; border: 1px #fff solid; border-radius: 5px; } .volColor { height: 5px; width: 100%; color: #fff; pointer-events: none; } .volBlock { pointer-events: none; position: absolute; top: 42px; width: 10px; height: 10px; border: 1px #fff solid; background: #f4f3f3; border-radius: 100%; left: 100%; margin-left: -5px; } .volTop { color: #fff; font-size: 10px; position: absolute; top: 25px; right: 0; -webkit-touch-callout: none; -webkit-user-select: none; -khtml-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; } .vImg { position: absolute; top: 38px; left: -26px; -webkit-touch-callout: none; -webkit-user-select: none; -khtml-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; } .time { font-family: "Microsoft YaHei"; font-size: 10px; line-height: 1.5; color: #fff; margin-top: 25px; } .cTime { float: left; -webkit-touch-callout: none; -webkit-user-select: none; -khtml-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; } .tTime { float: right; -webkit-touch-callout: none; -webkit-user-select: none; -khtml-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; } .progress { margin-left: 30px; margin-right: 30px; } .proBar { width: 100%; height: 2px; overflow: hidden; background: #B292FF; margin-top: 5px; border-radius: 5px; } .proColor { height: 7px; width: 30%; background: #fff; pointer-events: none; } .ctrls { text-align: center; margin-top: 20px; margin-left: 30px; margin-right: 30px; } .btn { position: absolute; top: 50px; } .nextPrev { right: 0; margin-left: 200px; opacity: 0.1; transition: all 0.3s; } .nextPrev:hover { opacity: 0.5; } .prevBtn { left: 0; opacity: 0.1; transition: all 0.3s; } .prevBtn:hover { opacity: 0.5; } .playBtn { height: 200px; width: 200px; border-radius: 200px; opacity: 0.3; position: absolute; top: 52px; left: 250px; margin-left: -14px; transition: all 0.3s; } .playBtn:hover { opacity: 0.5; background: #46847b; }

第三步，也是让音乐播放器具有灵魂的东西，使用JS添加功能。

1.获取ID（当然这里也可以获取类名或是元素，看你自己的习惯）。

 let music = document.getElementById("music"); let playBtn = document.getElementById("playBtn"); let prevBtn = document.getElementById("prevBtn"); let nextBtn = document.getElementById("nextBtn"); let img = document.getElementById("img"); let sName = document.getElementById("sName"); let singer = document.getElementById("singer"); let tTime = document.getElementById("tTime"); let proBar = document.getElementById("proBar"); let cTime = document.getElementById("cTime"); let songPro = document.getElementById("songPro"); let vol = document.getElementById("vol"); let volCol = document.getElementById("volCol"); let volB = document.getElementById("volB"); let volText = document.getElementById("volText");

2.添加音乐播放功能。

导入音乐

 let songs = [{ mp3: "music/01.mp3", singer: "赵薇", name: "不能和你分手", img: "images/1.jpg-600" }, { mp3: "music/04.mp3", singer: "陈粒", name: "易燃易爆炸", img: "images/2.jpg-600" }, { mp3: "music/06.mp3", singer: "胡夏/郁可唯", name: "知否知否", img: "images/3.jpg-600" }];

音乐播放

 let changeMusic = function(index) { music.src = songs[index].mp3; img.src = songs[index].img; sName.innerHTML = songs[index].name; singer.innerHTML = songs[index].singer; proBar.style.width = 0; }; let index = 0; changeMusic(index);

音乐播放暂停

 playBtn.addEventListener("click", function(event) { if (music.paused) { music.play(); event.currentTarget.innerHTML = ''; } else { music.pause(); event.currentTarget.innerHTML = ''; } });

音乐切换

 prevBtn.addEventListener("click", function(event) { //上一首 index--; if (index  songs.length - 1) { index = 0; } changeMusic(index); }); music.addEventListener('ended',function () { //自动播放下一首 index++; if (index > songs.length - 1) { index = 0; } changeMusic(index); })

3.添加进度条。

 music.addEventListener("loadedmetadata", function(event) { //提示音频的元数据已加载 tTime.innerHTML = parseInt(music.duration / 60) + ":" + parseInt(music.duration % 60); }); music.addEventListener("timeupdate", function(event) { //监听音乐事实播放事件 let jd = music.currentTime / music.duration; let bfb = jd * 100 + "%"; proBar.style.width = bfb; if (music.currentTime <10) { cTime.innerHTML = "0:0" + Math.floor(music.currentTime); } else if (music.currentTime <60) { cTime.innerHTML = "0:" + Math.floor(music.currentTime); } else { let minet = parseInt(music.currentTime / 60); let sec = music.currentTime - minet * 60; if (sec <10) { cTime.innerHTML = "0" + minet + ":" + "0" + parseInt(sec); } else { cTime.innerHTML = "0" + minet + ":" + parseInt(sec); } } });

小功能：点击进度条，音乐也跟着变化跳转到指定的时间。

 songPro.addEventListener("click", function(event) { let x = event.offsetX; let bfb = x / 610 * 100; proBar.style.width = bfb + "%"; music.currentTime = music.duration * bfb / 100; });

4.添加音量调节模块。

 let getBfb = function(event) { let x = event.clientX; //返回当事件被触发时鼠标指针向对于浏览器页面（或客户区）的水平坐标。 let volX = vol.getBoundingClientRect().x;  //getBoundingClientRect()获取元素的宽高位置 let disX = x - volX; disX = Math.max(0, disX); //返回最大数字 disX = Math.min(120, disX); //返回最小数字 return disX / 120; }; let setVol = function(event) { let bfb = Math.floor(getBfb(event) * 10000) / 100; volCol.style.width = bfb + "%"; volB.style.left = bfb + "%"; volText.innerHTML = Math.floor(bfb) + "%"; music.volume = bfb / 100; }; vol.addEventListener("mousedown", function() { document.addEventListener("mousemove", setVol); }); document.addEventListener("mouseup", function() { document.removeEventListener("mousemove", setVol); });

全部JS代码

这里我使用了{}作用域，让let 或 const声明的变量只在 let 或 const命令所在的代码块 {} 内有效，在 {} 之外不能访问（ECMAScript 6(简称ES6)中新增的）。

 { let music = document.getElementById("music"); let playBtn = document.getElementById("playBtn"); let prevBtn = document.getElementById("prevBtn"); let nextBtn = document.getElementById("nextBtn"); let img = document.getElementById("img"); let sName = document.getElementById("sName"); let singer = document.getElementById("singer"); let tTime = document.getElementById("tTime"); let proBar = document.getElementById("proBar"); let cTime = document.getElementById("cTime"); let songPro = document.getElementById("songPro"); let vol = document.getElementById("vol"); let volCol = document.getElementById("volCol"); let volB = document.getElementById("volB"); let volText = document.getElementById("volText"); let songs = [{ mp3: "music/01.mp3", singer: "赵薇", name: "不能和你分手", img: "images/1.jpg-600" }, { mp3: "music/04.mp3", singer: "陈粒", name: "易燃易爆炸", img: "images/2.jpg-600" }, { mp3: "music/06.mp3", singer: "胡夏/谭维维", name: "知否知否", img: "images/3.jpg-600" }]; let changeMusic = function(index) { music.src = songs[index].mp3; img.src = songs[index].img; sName.innerHTML = songs[index].name; singer.innerHTML = songs[index].singer; proBar.style.width = 0; }; let index = 0; changeMusic(index); playBtn.addEventListener("click", function(event) { if (music.paused) { music.play(); event.currentTarget.innerHTML = ''; } else { music.pause(); event.currentTarget.innerHTML = ''; } }); prevBtn.addEventListener("click", function(event) { //上一首 index--; if (index  songs.length - 1) { index = 0; } changeMusic(index); }); music.addEventListener('ended',function () { //自动播放下一首 index++; if (index > songs.length - 1) { index = 0; } changeMusic(index); }) music.addEventListener("loadedmetadata", function(event) { //提示音频的元数据已加载 tTime.innerHTML = parseInt(music.duration / 60) + ":" + parseInt(music.duration % 60); }); music.addEventListener("timeupdate", function(event) { //监听音乐事实播放事件 let jd = music.currentTime / music.duration; //music.duration总时长 music.currentTime 当前时长 let bfb = jd * 100 + "%"; proBar.style.width = bfb; if (music.currentTime <10) { cTime.innerHTML = "0:0" + Math.floor(music.currentTime); //Math.floor()向下取整 } else if (music.currentTime <60) { cTime.innerHTML = "0:" + Math.floor(music.currentTime); } else { let minet = parseInt(music.currentTime / 60); //parseInt()解析一个字符串，并返回一个整数 let sec = music.currentTime - minet * 60; if (sec <10) { cTime.innerHTML = "0" + minet + ":" + "0" + parseInt(sec); } else { cTime.innerHTML = "0" + minet + ":" + parseInt(sec); } } }); songPro.addEventListener("click", function(event) { let x = event.offsetX; let bfb = x / 610 * 100; proBar.style.width = bfb + "%"; music.currentTime = music.duration * bfb / 100; }); let getBfb = function(event) { let x = event.clientX; //返回当事件被触发时鼠标指针向对于浏览器页面（或客户区）的水平坐标。 let volX = vol.getBoundingClientRect().x;  //getBoundingClientRect()获取元素的宽高位置 let disX = x - volX; disX = Math.max(0, disX); //返回最大数字 disX = Math.min(120, disX); //返回最小数字 return disX / 120; }; let setVol = function(event) { let bfb = Math.floor(getBfb(event) * 10000) / 100; volCol.style.width = bfb + "%"; volB.style.left = bfb + "%"; volText.innerHTML = Math.floor(bfb) + "%"; music.volume = bfb / 100; }; vol.addEventListener("mousedown", function() { document.addEventListener("mousemove", setVol); }); document.addEventListener("mouseup", function() { document.removeEventListener("mousemove", setVol); }); }

最终效果展示：

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